NumberResearch Membership · Data 09/20/2026

Recent prefix assignments

1 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.

Most active assignees, last 30 days — NPA 508
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 1
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent NPA-NXX prefix assignments
AssignedNPA-NXXThousands-blocks taken (last-4 opening)Code holderOCNRate centerState
— 508-737 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYANNIS MA
— 508-739 3XXX5XXX9XXX · 2 holders which blocks → MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 FRAMINGHAM MA
— 508-740 none assigned yet which blocks → METROPCS, INC. 5562 FRAMINGHAM MA
— 508-741 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 BROCKTON MA
— 508-742 5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J NEWBEDFORD MA
— 508-743 1XXX2XXX4XXX5XXX6XXX7XXX · 6 holders which blocks → VERIZON NEW ENGLAND INC. 9102 BUZZARDSBY MA
— 508-744 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. 7135 BARNSTABLE MA
— 508-745 0–9 XXXall 10 · 2 holders which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 NATICK MA
— 508-746 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PLYMOUTH MA
— 508-747 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 PLYMOUTH MA
— 508-748 5XXX which blocks → VERIZON NEW ENGLAND INC. 9102 MARION MA
— 508-749 not yet reported which blocks → PAETEC ITEL, LLC 829J WORCESTER MA
— 508-750 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 PROVINCETN MA
— 508-751 0XXX3XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-752 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-753 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-754 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-755 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-756 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-757 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-758 0XXX1XXX5XXX8XXX · 4 holders which blocks → VERIZON NEW ENGLAND INC. 9102 MATTAPOSTT MA
— 508-759 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 BUZZARDSBY MA
— 508-760 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 DENNIS MA
— 508-761 0XXX1XXX2XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 SOUTHGATE MA
— 508-762 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → TC SYSTEMS, INC. 7135 WORCESTER MA
— 508-763 1XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 ROCHESTER MA
— 508-764 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 SOUTHBDG MA
— 508-765 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 SOUTHBDG MA
— 508-766 0XXX which blocks → VERIZON NEW ENGLAND INC. 9102 FRAMINGHAM MA
— 508-767 5XXX which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-768 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J WESTBORO MA
— 508-769 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 WORCESTER MA
— 508-770 2XXX3XXX5XXX6XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 WORCESTER MA
— 508-771 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HYANNIS MA
— 508-772 0XXX1XXX2XXX3XXX4XXX7XXX8XXX · 4 holders which blocks → PAETEC ITEL, LLC 829J FOXBORO MA
— 508-773 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 FRANKLIN MA
— 508-775 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HYANNIS MA
— 508-776 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 HYANNIS MA
— 508-777 not yet reported which blocks → NORFOLK COUNTY INTERNET, INC. 6083 OSTERVILLE MA
— 508-778 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HYANNIS MA
— 508-780 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 DOVER MA
— 508-782 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → TC SYSTEMS, INC. 7135 FRAMINGHAM MA
— 508-783 not yet reported which blocks → NEW CINGULAR WIRELESS PCS, LLC - DC 4036 LAWRENCE MA
— 508-784 1XXX5XXX6XXX7XXX · 2 holders which blocks → PAETEC ITEL, LLC 829J CHARLTON MA
— 508-785 4XXX5XXX6XXX7XXX · 3 holders which blocks → VERIZON NEW ENGLAND INC. 9102 DOVER MA
— 508-786 8XXX9XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 MARLBORO MA
— 508-787 6XXX which blocks → VERIZON NEW ENGLAND INC. 9102 MARLBORO MA
— 508-788 4XXX8XXX · 2 holders which blocks → VERIZON NEW ENGLAND INC. 9102 FRAMINGHAM MA
— 508-789 not yet reported which blocks → CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 6387 ROCHESTER MA
— 508-790 not yet reported which blocks → VERIZON NEW ENGLAND INC. 9102 HYANNIS MA

Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.